Got COVID with no symptoms? A mutated gene may explain why
globalnews.caCOVID-19 has left a profound impact on millions worldwide, leading some to require hospitalization, others needing extended bed rest and a significant number who lost their lives. However, there exists a group of individuals who contracted the contagious virus but didn’t experience a single symptom.Researchers may have unraveled the reason behind this phenomenon: the human leukocyte antigen (HLA), a molecule that assists the immune system during early infections.A mutated HLA gene could explain why some people never develop symptoms from SARS-CoV-2, the virus that causes COVID-19, even if they were infected.A study published Wednesday in Nature found that people with the mutated gene, HLA-B*15:01, are more than twice as likely to not get sick from the virus.
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